Excel formula to check date within this week and last week

Question

Does anyone have a formula for Excel that will make the cells read "this week" if the dates are from this week (today's date), and "last week" if the dates are from the previous week?

Ps: If the date range is neither this week nor last week, the formula should also read "old."

The dates in Column A, for instance, are as follows. Column B should indicate if the date falls within this week or the last week of the current date.

Column A	Column B
01/11/2013	Old
02/11/2013	Old
03/11/2013	Old
04/11/2013	Old
05/11/2013	Old
06/11/2013	Old
07/11/2013	Old
08/11/2013	Old
09/11/2013	Old
10/11/2013	Old
11/11/2013	Old
12/11/2013	Old
13/11/2013	Old
14/11/2013	Last week
15/11/2013	Last week
16/11/2013	Last week
17/11/2013	Last week
18/11/2013	Last week
19/11/2013	Last week
20/11/2013	Last week
21/11/2013	This Week
22/11/2013	This Week
23/11/2013	This Week
24/11/2013	This Week
25/11/2013	This Week
26/11/2013	This Week
27/11/2013	This Week
28/11/2013	This Week

Answer 1

Assuming the first date in A2 try this formula in B2 copied down to give those results:

=IF(A2 < TODAY()-14, "Old", IF(A2 < TODAY()-7, "Last week", "This Week"))

As per my comment that puts 8 days in the current week, is that right? If not then change both < to <=.